When using Delphi2007 to compile a GUI program, you will find that the program icon displayed in the status bar of Win7 is very blurry. How about the clarity of the original icon. The reason for this result is that the icon icon generated by Delphi2007 only meets the requirements of systems such as XP and has not been optimized for Win7. There are many ways to deal with it on the Internet. Later, I found the simplest and most effective method, which is to only set the icon of the project instead of the icon of the Form window.
References:
Blurred Delphi Form Icon in Windows 7 Taskbar
Delphi form icons are blurry on Windows 7's taskbar (with MainFormOnTaskbar enabled)